Car-coupling.



No. 780,235. PTENTED JAN.1'7, 1905. W. S.. SGHROBDER @L A. P. LINDHLM.

GAR UOUPLNG.

APPLIATIoN FILED MAR. e, 1904.

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No. 780,235. PATENTED JAN. 17. 1905. W. S. SCHROEDER @L A. R LINDHOLVJ.

v GAR GUUPLING.

APPLIOATIolr FILED MAR.9,1904.

2 SHEETS-SHEET 2.A

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No. I780,235.

SATES Patented fanuary 1?, 1905.

ATENT muon.

WILLIAM S. SCI-IROEDER AND ANDREW P. LINDIIOLM, OF CHICAGO, ILLINOIS.

@An-modernere...

SPECIFICATION forming part of Letters Patent No. 780,235. dated January17, 1905.

Application led March 9, 1904. Serial No. 197,282.

T0 00H/ tf1/1,0m t may concern.-

Be it known that we, WILLIAM S. Sonnen- D En and ANDREW I). LINDHoLivI,citizens of the United States, residing' in Chicago, in the county ofCook and State of Illinois, have in vented a new and useful Improvementin Car- Uouplers, of which the following is a specilication.

Uur invention relates to improvements in car couplers of the M. C. B. orMaster Car- Builders type having' a forked draw-head, a pivotal knuckle,and a gravity-lock; and it relates more particularly to Master Gar-Builders couplers of the particular type having a gravity-lock consisting' ofa longitudinal pivotal locking-bar lying' in the chamber of the drawbarand having a pivotal connection therewith at its inner end and engagednear its outer end by a vertically-moving couplingpin or lifting-pinwhich is connected in the usual manner by a chain with thelifting-lever.

The object of our invention is to provide a longitudinal pivotallocking-barycoupler of a strong, simple, eflicient, durable, and safeconstruction in which the longitudinal pivotal locking-bar may be set inposition for uncoupling by engaging the tail of the knuckle, in whichthe front or locking end of the longitudinal pivotal locking-bar may beprevented. from jumping or accidental movement upward when the cars arecoupled and the train is in motion, and in which the knuckle may beautomatically thrown open.

Our invention consists in the means we employ to practically accomplishthis object or result, as herein shown and described-that is to say, itconsists in the novel construction of parts and devices and in the novelcombi nations of parts and devices herein shown and described, andspecified in the claims.

In the accompanying drawings, forming a part of this specification,Figure l is a central vertical section of alongitudinal pivotal locking'bar coupler embodying' our invention.

Fig. 2 is a similar view showing the locking'- bar in its raised orlock-set positionMthat is to say, when the coupler is set foruncoupling. Fig. 3 is a horizontal section on line 3 3 Fig. 4 is a planview, partly in of Fig. l.

section, on line 4 4 of Fig'. l. Fig. 5 is a vertical cross-section online 5 5 of Fig. l. Fig. 6 is a detail perspective view of the locking'or lifting pin. Fig. 7 is a side elevation of the longitudinal pivotallocking-bar. Fig. 8 is a front end view of the same. Fig. 9 is a detailview of the knuckle throwing lever. Fig. l() is a plan view of theknuckle, and Fig'. 11 is a detail plan view showing' the opening in thedraw-head for the lifting-pin. Fig'. 1Q is a cross-section of thelocking-bar.

In the drawings, A represents the drawbar; Af, the forked draw-head,having the customary pivot-arm A2 and guard-arm A3.

B is the knuckle, pivoted to the draw-head by the pivotpin O and havinga tail B', which is engaged by the longitudinal pivotal locking-bar I),which lits and lies in the chamber a of the draw-bar. The tail B oftheknuckle has at its roar end a transversely extending inclined face I)to engage the curved or1nclined face (Z of the locking-bar D, and thusautomatically lift the locking-bar by the closing' movement of theknuckle, the inclined face of the knuckle-tail thus passing under thelocking-bar. The tail of the knuckle is also furnished with a recess orseat 7) on its inclined face b to receive a lock-set leg or projectiond', which projects downwardly from the locking-bar I), near the frontend thereof. 'Ihc lock-set leg or projection (Z of the locking -bar ismade hook shaped o1' 'furnished with a forwardly-projecting lip cl2,which lits under the extreme rear end of the knuckletail, thus causingthe knuckle-tail itself when the knuckle is closed to keep or lock thefront end of the locking-bar from jumping' or moving' upwardaccidentally when the cars are coupled together and the train is inmotion.

F is the coupling or lifting' pin, by which the outer or free end of thelongitudinallyextending pivotal locking-bar D is operated or lifted tounlock the coupler or permit the knuckle to swing open.

F' is a clevis pivotally connected to the upper end of the lifting-pin Fand connected by a link F and clevis F3 with the lifting'- lever F1, andUr is the lmuckle-throwing lever.

The draw-bar is provided inside the cham ber c on its lower web or ioorwith integral saddles or ribs d, having elongated pivot notches orrecesses c2 therein to receive the pivot-lugs (Z3 at the rear end of thelockingbar D, the pivot notches or slots 602 being long enough to permitthe necessary longitudinal movement of the locking-bar to enable itslock-set leg or projection d to engage the corresponding lock-set seator recess b on the tail of the knuckle. The elongated notch or recess a2has an inclined bottom a3, which aids in returning the locking-barlongitudinally to position when in its forward position, and thus alsodiminishing the inclination of the pivotal locking-bar when its frontend is raised to its lock-set position on the knuckle-tail.

The locking-bar D is provided at its front end with a chamber dt, havingan opening Z5 large enough to receive the head or shoulder f on thecoupling or lifting pin F and provided with a slot CZ to receive the webf, which connects the head or shoulder f with the coupling-pin F.

The draw-bar A is provided with a guiderib c* to engage the front orenlarged end of the locking-bar D to keep the same in positionlaterally, while permitting the lockingbar to be raised as required atits front end. The lifting-pin F iits in an opening a5 in the top walla6 of the draw-head and is provided with an irregularity or rib f2,which prevents its being turned wrong when it is put in place. To causethe locking-bar D to be thrown or moved longitudinally forward as it israised by the lifting-pin F, the draw-head is provided with a projectionor fulcrum c7 to cause the upper end of the lifting-pin to tilt backwardand its lower end forward when the lifting-pin is acted upon by thelifting-lever Ff. To further insure the proper backward tilting of thelifting-pin and the longitudinal forward movement of the locking-barwhen the same is being raised, we provide the clevis F with an arm f3,which engages a flange ft of the lifting-pin, and thus limits thepivotal movement of the clevis on the pin. The projecting arm on theclevis also prevents any possibility of the links of the lifting-chainbecoming kinked or entangled. 4

To set the locking-bar in its position for permitting the cars touncouple when the two adjacent cars are separated, the locking-bar israised or lifted by the lifting-lever through the lifting-pin F, thisoperation simultaneously moving the locking-bar slightly longitudinallyforward, so vthat its lock-set leg CZ will engage and rest upon thelock-set seat ZJ on the tail of the knuckle, and thus hold the lock inits raised or lock-set position. Vhen the coupled cars are now pulledapart, the tail of the knuckle rides under the lock and permits it todrop.

The knuckle-throwing lever G has a pivot arm or projection g, which fitsin a suitable notch lor recess as in the draw-head, and an actuating webor arm g', which tits over the front end of the locking-bar D and isengaged thereby when the front end of the lockingbar is sufficientlylifted. The knuckle-throwing lever G also has a curved or horn-shapedarm g2, which engages and follows the tail of the knuckle to throw thesame open. The knuckle-throwing lever has both a rocking or rotarymovement about its pivot-arm g as an axis and also a swinging or tiltingmovement about the eXtreme end of its pivot-arm g as a fulcrum, thusgiving the curved or hornshaped operating-arm g2, which engages theknuckle, a combined or compound movement that causes it to properlyfollow the path of the tail of the knuckle in pushing or throwing theknuckle open. When the fiat arm g of the knuckle-throwing lever G isengaged by the front end of the locking-bar D as it moves upward, ittends to tilt or swing the knuckle-throwing lever about the end of itspivot-arm g as a fulcrum for the lever and at the same time to rock orrotate the knucklethrowing lever about its arm g as an axis, thus givingits curved or horn-shaped operating-arm g2 a compound movement, theresultant of these two motions of the lever which causes theknuckle-throwing lever, though mounted above the knuckle, to keep itscurved arm g2 in proper engagement with the tail of the knuckle as itswings open in its horizontal circular path. To cause the fiat or webarm g of the knuckle-throwing lever G to be properly engaged by thelocking-bar D, the locking-bar is provided at its frontend with a wingor projection 6X7, that engages the web or flat arm of theknuckle-throwing-lever after the front end of the locking-bar is raisedsufliciently to permit the tail of the knuckle to move under the same.rIhe chamber a in the draw-head for the arm g2 of the knucklethrowinglever G has a rib (om extending across it to serve as a guide, rest, andsupport for the knuckle-throwing lever.

We claiml. In a car-coupler, the combination with a pivoted knuckle, aforked draw-head and a draw-bar having a chamber to receive alongitudinal pivotal locking-bar, of a pivotal and longitudinallymovable rlocking bar lying lengthwise in the chamber of the draw-bar,and provided at its front end with a lock-set leg or projection, and acoupling or lifting pin connected with the front or free end of thelocking-bar, said knuckle having on its tail a lock-set seat or recessto engage the lock-set leg or projection on the locking-bar when thesame is raised and moved longitudinally forward by the lifting-pin,substantially as specified.

2. In a car-coupler, the combination with a pivoted knuckle, a forkeddraw-head and a draw-bar having a chamber to receive a longitudinalpivotal locking-bar, of a pivotal and longitudinally movable locking barlying lengthwise in the chamber of the draw-bar,

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and provided at its front end with a lock-set leg or projection, acoupling or lifting pin connected with the front or free end of thelocking-bar, said knuckle having' on its tail a lock-set seat or recessto engage the lock-set leg' or projection on the locking-bar when thesame is raised and moved long'itudinally forward by the lifting-pin, anda knuckle-throwing' lever having' a pivot-arm eng'aging a recess in thedraw-head, an arm adapted to engag'e the front end of the locking-barwhen the same is raised, and an operating-arm engaging the tail of theknuckle to throw the l knuckle open, substantially as specified.

3. In a car-coupler, the combination with a pivoted knuckle, a forkeddraw-head and a draw-bar having a chamber to receive a longitudinalpivotal locking-bar, of a pivotal and longitudinallymovable lockingbarlying lengthwise in the chamber of the draw-bar, and provided at itsfront end with a lock-set leg or projection, and a coupling or liftingpin connected with the front or free end of the locking-bar, saidknuckle having' on its tail a lock-set seat or recess to engage thelock-set leg or projection on the locking-bar when the same is raisedand moved longitudinally forward by the lifting-pin, said lock-set leg'or projection on the locking-bar having a forwardly-projecting lipengaging' the tail of the knuckle to prevent the frontend of thelocking-bar from jumping or moving upward accidentally, substantially asspecified.

4. In a car-coupler, the combination with a pivoted knuckle, a forkeddraw-head and a draw-bar having a chamber to receive a long'itudinalpivotal locking-bar, of a pivotal and longitudinallymovable locking barlying' lengthwise in the chamber of the draw-bar, and provided at itsfront end with a lock-set leg or projection, a coupling or lifting pinconnected with the front or free end of the locking-bar, said knucklehaving on its tail a lock-set seat o1' recess to engage the lock-set legor projection on the locking-bar when the same is raised and movedlongitudinally foi'- ward by the lifting-pin, and aknuckle-throwinglever Lhaving a pivot-arm engaging a recess in the draw-head, an armadapted to engage the front end of the locking-bar when the same israised, and an operating-arm eng'aging the tail of the .knuckle to throwthe knuckle open, said knuckle-throwing' lever having a rocking'movement about its pivotarm as an axis, and a swinging or tiltingmovement about the end of its pivot-arm as a fulcrum, substantially asspecilied.

5. In a car-coupler, the combination with a forked draw-head, anddraw-bar, of a pivoted knuckle and a pivotal locking-bar lying'lengthwise in the chamber of the draw-bar, and a lifting-pin, saidlocking-bar and the tail of the knuckle being' furnished withintcrengaging lock-set devices, substantially as specified.

6. In a car-coupler, the combination with a forked draw-head anddraw-bar, of a pivoted knuckle and a pivotal locking-bar lyinglengthwise in thc chamber of the draw-bar, and a lifting-pin, saidlocking-bar and the tail of the knuckle being' furnished withinterengaging lock-set devices, said lifting-pin having' a pivotalclevis provided with an arm or projection engag'ing the lifting-pin tolimit the pivotal movement of the clevis in respect to the lifting-pin`substantially as specified.

7. In a car-coupler, the combination with a forked draw-head and adraw-bar, of a pivoted knuckle and a pivotal locking-bar lying'lengthwise in the chamber of the draw-bar, and a lifting-pin, saidlocking-bar and the tail of the knuckle being furnished withinterengaging lock-set devices, a pivotal clevis provided with an arm orprojection eng'aging the lifting-pin to limit the pivotal movement ofthe clevis in respect to the lifting-pin, said lifting-pin having afulcrum-like bearing on the drawhead to cause the locking-bar to moveslightly longitudinally forward as it is raised, substantially asspecified.

8. In a car-coupler, the combination with a 'forked draw-head anddraw-bar, of a pivoted knuckle and a pivotal longitudinally-movablelocking-bar lying lengthwise in the chamber of the draw-bar, andprovided with a lockset leg or projection, and a lifting-pin, saidknuckle being provided with a lock-set seat or recess, substantially asspecified.

9. In a car-coupler, the combination with a forked draw-head anddraw-bar, of a pivoted knuckle and a pivotal longitudinally-movable IOOlocking-bar lying lengthwise in the chamber of the draw-bar, andprovided with a lockset leg' or projection, and a lifting-pin, saidknuckle being' provided with a lock-set seat or recess, said lock-setleg on the locking-bar having a lip engaging the tail of the knuckle toprevent the front end of the locking-bar jumping or moving upwardaccidentally, substantially as specified.

l0. In a car-coupler, the combination with a forked draw-head anddraw-bar, of a pivoted knuckle and a pivotal locking-bai' lyinglengthwise in the chamber of the draw-bar, and provided with a lip atits front end engaging the tail of the knuckle to prevent the front endof the locking-bar from jumping or moving' upward accidentally, and aliftingpin connected to the locking-bar, substantially as specified.

W ILLIAM S. SCI-IROEDER. ANDREW I). LINDHOLM. I/Vitnesses:

H. M. MUNDAY, WVILLIAM A.. (jl-menu.

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